Bitter Advocacy/Bitter Advocatuur is a boutique law firm located in The Hague, Netherlands. Its main area’s of activity are litigation, arbitration and commercial contracting, including international sales law. The firm is run by Mr Jan Willem Bitter, a former partner of Simmons & Simmons (retired 2016), who has been a member of the Dutch bar from 1983 onwards. During the last 35 years or so, Mr Bitter has acted as counsel in domestic litigation, in (international) arbitration proceedings, as advising counsel on issues of contract drafting, as a speaker at conferences in the Netherlands and abroad and as a lecturer on issues of arbitration and contract law. He has published a book on Dutch arbitration law (2018).